iMX6 iMX6ul iMX7

How to build U-Boot and Kernel in standalone environment

References

• i.MX BSP Porting Guide (IMXXBSPPG) - Contains the information on:
• • How to build and load Kernel in standalone environment
• • How to build U-Boot in standalone environment

Generate an SDK from the Yocto Project build environment

cd ${BUILDDIR}
DISTRO=fsl-imx-fb MACHINE=cl-som-imx6 bitbake core-image-minimal -c populate_sdk

Kernel/U-Boot Source Code

Set a target

• cl-som-imx6

Kernel	U-Boot
export TARGET=linux-compulab	export TARGET=u-boot-compulab
export DEFCONFIG=cl_som_imx6_defconfig	export DEFCONFIG=cl_som_imx6_defconfig

• cl-som-imx6ul

Kernel	U-Boot
export TARGET=linux-compulab	export TARGET=u-boot-compulab
export DEFCONFIG=cl_som_imx6ul_defconfig	export DEFCONFIG=cl_som_imx6ul_defconfig

• cl-som-imx7

Kernel	U-Boot
export TARGET=linux-compulab	export TARGET=u-boot-compulab
export DEFCONFIG=compulab_imx7_defconfig	export DEFCONFIG=cl_som_imx7_defconfig

Retrieve the target information

git clone -b devel_ga https://github.com/compulab-yokneam/meta-compulab-imx8 ../sources/meta-compulab-imx8
bitbake -c devshell ${TARGET}
mkdir -p ${BUILDDIR}/../ooye/${TARGET}
${BUILDDIR}/../sources/meta-compulab-imx8/bb-tools/getenv > ${BUILDDIR}/../ooye/${TARGET}/.rc
exit

Clone the target source code & patch it

cd ${BUILDDIR}/../ooye/${TARGET}
source ${BUILDDIR}/../ooye/${TARGET}/.rc
git clone ${ORIGIN} src
git -C src checkout -b development ${HEAD}
git -C src am ${PATCHES}/*.patch

Building the target

• Set the environment with the following command before building.

source /opt/fsl-imx-fb/*/environment-setup-cortexa9hf-vfp-neon-pokylinux-gnueabi

• Issue build for the target this way:

make -C src ${DEFCONFIG}
make -C src -j8